Contacts of the helix formed by residues 154 - 175 (chain E) in PDB entry 5K58


Residue contacts within the protein are derived with the CSU software (Sobolev V., Sorokine A., Prilusky J., Abola E.E. and Edelman M. (1999) Automated analysis of interatomic contacts in proteins. Bioinformatics, 15, 327-332). A short description of the analytical approach is given at the end of the page.
For CSU analysis of other PDB entry

Note:
Non-standard 3 letter residue codes indicate a heterogroup. To identify and analyse, use LPC software

Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB   - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC   - hydrophobic-hydrophilic contact (destabilizing contact)
+/-  - indicates presence/absence of a specific contacts
*    - indicates residues forming contacts  by their side chain
       (including CA atoms)
Residues in contact with ASP 154 (chain E).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    152E  THR      3.6     4.4    +      -       -      -
    153E  THR*     1.3    73.6    -      -       -      +
    155E  GLU*     1.3    80.9    +      -       -      +
    156E  THR*     3.1    20.8    +      -       -      -
    157E  LEU*     3.2    23.0    +      -       +      +
    158E  LEU*     3.0    18.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 155 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    137E  ARG*     4.4    17.0    -      -       +      +
    140E  MET*     4.0     9.2    -      -       +      +
    141E  ARG*     3.5    47.6    +      -       +      +
    151E  TYR*     3.5    34.1    -      -       +      +
    153E  THR      3.2    15.1    -      -       -      +
    154E  ASP*     1.3    84.2    +      -       -      +
    156E  THR*     1.3    58.0    +      -       -      +
    158E  LEU*     3.4     9.7    -      -       -      +
    159E  ALA*     3.0    27.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 156 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    133E  GLU*     4.0     4.4    -      -       -      +
    137E  ARG*     3.6    42.1    -      -       -      +
    154E  ASP*     3.2    13.5    +      -       -      -
    155E  GLU*     1.3    75.9    -      -       -      +
    157E  LEU*     1.3    51.3    +      -       -      +
    158E  LEU      3.0     5.2    -      -       -      -
    159E  ALA*     4.3     1.1    -      -       -      +
    160E  SER*     2.7    33.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 157 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    153E  THR*     6.0     2.2    -      -       -      -
    154E  ASP*     3.2    26.2    +      -       +      +
    156E  THR*     1.3    77.8    -      -       -      +
    158E  LEU*     1.3    57.7    +      -       -      +
    160E  SER*     3.0    14.3    +      -       -      -
    161E  GLN*     3.7    12.6    +      -       -      +
    185F  ASP*     3.7    23.8    -      -       +      +
    188F  ALA*     3.7    24.5    -      -       +      -
    189F  ARG*     3.4    49.3    +      -       +      +
    192F  LEU*     4.4     6.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 158 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    140E  MET*     4.1    17.9    -      -       +      -
    151E  TYR*     4.0    29.4    -      -       +      -
    153E  THR*     3.2    33.0    -      -       -      +
    154E  ASP      3.0     9.2    +      -       -      +
    155E  GLU*     3.4    10.8    -      -       -      +
    156E  THR      3.0     0.2    -      -       -      -
    157E  LEU*     1.3    76.4    -      -       -      +
    159E  ALA*     1.3    66.6    +      -       -      +
    160E  SER      3.1     1.3    -      -       -      -
    161E  GLN*     2.9     6.2    +      -       +      +
    162E  ILE*     2.9    31.6    +      -       +      +
    196E  GLN*     3.1    29.2    -      -       +      +
    197E  LEU*     4.6     2.9    -      -       +      -
    192F  LEU*     3.6    21.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 159 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    133E  GLU*     3.7    32.2    -      -       +      +
    136E  LEU*     3.9    15.1    -      -       +      +
    137E  ARG*     4.1    10.8    -      -       +      +
    140E  MET*     4.0     9.8    -      -       +      +
    155E  GLU      3.0    15.1    +      -       -      +
    156E  THR      3.7     3.6    +      -       -      +
    158E  LEU*     1.3    78.8    -      -       -      +
    160E  SER*     1.3    62.3    +      -       -      +
    162E  ILE*     3.6     6.3    +      -       -      +
    163E  LEU*     3.1    26.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 160 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    133E  GLU*     4.0    18.7    +      -       -      -
    156E  THR      2.7    22.6    +      -       -      -
    157E  LEU*     3.0    19.1    +      -       -      -
    159E  ALA*     1.3    76.6    -      -       -      +
    161E  GLN*     1.3    50.0    +      -       -      -
    163E  LEU*     3.2     2.4    +      -       -      +
    164E  ALA*     2.5    40.5    +      -       -      +
    169F  MET*     6.1     1.8    -      -       -      -
    172F  ARG*     4.7    16.0    +      -       -      +
    180F  TYR*     5.7     3.1    -      -       -      -
    189F  ARG*     3.3    19.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 161 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    157E  LEU      3.7     8.4    -      -       -      +
    158E  LEU*     2.9    13.1    +      -       +      +
    160E  SER*     1.3    76.9    +      -       -      +
    162E  ILE*     1.3    63.9    +      -       +      +
    164E  ALA*     3.3     6.8    +      -       -      +
    165E  PHE*     3.0    23.0    +      -       -      +
    196E  GLN*     4.1    23.6    +      -       +      +
    165F  PHE*     3.3    37.1    -      -       +      -
    189F  ARG*     3.4    46.5    +      -       -      +
    192F  LEU*     3.9    23.2    -      -       +      +
    193F  ILE*     4.5     7.9    -      -       -      +
    196F  GLN*     5.2     0.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 162 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     88E  LEU*     4.4    14.1    -      -       +      -
     92E  VAL*     3.7    28.7    -      -       +      -
    136E  LEU*     3.8    15.7    -      -       +      -
    140E  MET*     3.7    37.7    -      -       +      -
    158E  LEU*     2.9    19.7    +      -       +      +
    159E  ALA*     3.7     7.2    -      -       -      +
    161E  GLN*     1.3    78.0    -      -       +      +
    163E  LEU*     1.3    63.8    +      -       -      +
    165E  PHE*     3.2    19.7    +      -       -      +
    166E  CYS*     3.4     9.5    -      -       -      -
    193E  ILE*     4.9    20.0    -      -       +      -
    196E  GLN*     5.5     6.5    -      -       +      +
    197E  LEU*     4.5    12.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 163 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     95E  LEU*     3.6    31.6    -      -       +      -
    129E  PHE*     3.4    54.5    -      -       +      +
    132E  ILE*     4.1    12.8    -      -       +      -
    133E  GLU*     4.1    13.7    -      -       +      -
    136E  LEU*     4.4     7.4    -      -       +      -
    159E  ALA      3.1    14.4    +      -       -      +
    160E  SER*     4.0     2.0    -      -       -      +
    162E  ILE*     1.3    77.5    -      -       -      +
    164E  ALA*     1.3    66.1    +      -       -      +
    166E  CYS*     3.1    22.2    +      -       +      +
    167E  GLU*     3.2    18.3    +      -       +      +
    172F  ARG*     4.8    10.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 164 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    160E  SER      2.5    22.7    +      -       -      +
    161E  GLN*     3.4    10.5    -      -       -      +
    163E  LEU*     1.3    74.3    -      -       -      +
    165E  PHE*     1.3    63.2    +      -       -      +
    166E  CYS      3.3     0.5    +      -       -      -
    167E  GLU*     3.4     2.5    +      -       -      +
    168E  GLY      3.5     0.2    +      -       -      -
    164F  ALA      4.1     1.0    -      -       -      +
    165F  PHE*     4.1     6.5    -      -       +      -
    168F  GLY*     3.1    35.4    +      -       -      +
    169F  MET*     3.6    34.8    -      -       +      -
    172F  ARG*     4.2     8.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 165 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92E  VAL*     4.7    11.0    -      -       +      -
     96E  LEU*     4.3    15.3    -      -       +      -
    161E  GLN      3.0    12.1    +      -       -      +
    162E  ILE*     3.2    13.0    -      -       +      +
    163E  LEU      3.2     0.2    -      -       -      -
    164E  ALA*     1.3    75.7    -      -       -      +
    166E  CYS*     1.3    69.8    +      -       -      +
    168E  GLY*     3.2    11.4    +      -       -      -
    169E  MET*     3.3    33.0    +      -       +      +
    186E  PHE*     5.4     4.9    -      +       -      -
    189E  ARG*     4.2    22.2    -      -       +      -
    193E  ILE*     4.2    25.1    -      -       +      -
    161F  GLN*     3.9    30.1    -      -       -      -
    164F  ALA*     3.8    26.3    -      -       +      +
    165F  PHE*     4.5    15.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with CYS 166 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92E  VAL*     4.6    13.0    -      -       -      -
     95E  LEU*     4.3    12.1    -      -       +      -
     96E  LEU*     3.7    31.4    -      -       +      -
    129E  PHE*     6.3     0.2    -      -       +      -
    162E  ILE*     3.4    17.5    -      -       -      -
    163E  LEU*     3.1    29.7    +      -       +      +
    165E  PHE*     1.3    77.7    -      -       -      +
    167E  GLU*     1.3    57.9    +      -       -      +
    168E  GLY      3.0     4.5    -      -       -      -
    169E  MET*     3.0     6.4    +      -       -      +
    170E  LEU*     2.9    39.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 167 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    110E  THR*     5.6     1.0    -      -       -      +
    129E  PHE*     3.3    36.2    -      -       +      -
    163E  LEU*     3.2    13.0    +      -       +      +
    164E  ALA      3.4     2.0    +      -       -      +
    166E  CYS*     1.3    78.1    -      -       +      +
    168E  GLY*     1.3    56.7    -      -       -      +
    170E  LEU*     4.1     8.4    -      -       -      +
    171E  SER*     3.3    25.1    +      -       -      -
    168F  GLY*     3.8    14.8    -      -       -      +
    171F  SER*     3.2    30.4    +      -       -      -
    172F  ARG*     3.3    21.0    +      -       -      +
    175F  ARG*     2.8    37.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 168 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    164E  ALA      3.5     4.4    +      -       -      -
    165E  PHE      3.2     3.0    +      -       -      -
    166E  CYS      3.0     1.4    -      -       -      -
    167E  GLU*     1.3    77.4    -      -       -      +
    169E  MET*     1.3    63.2    +      -       -      +
    171E  SER*     3.3     4.2    +      -       -      -
    172E  ARG*     3.2    26.7    +      -       -      +
    164F  ALA*     3.3    29.8    -      -       -      -
    167F  GLU*     3.9     7.8    -      -       -      +
    168F  GLY*     3.6     9.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with MET 169 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     96E  LEU*     4.1    17.9    -      -       +      -
    165E  PHE*     3.3    34.6    +      -       +      +
    166E  CYS      3.0     6.7    +      -       -      +
    168E  GLY*     1.3    74.2    -      -       -      +
    170E  LEU*     1.3    58.8    +      -       -      +
    172E  ARG*     3.1     8.7    +      -       -      +
    173E  PHE*     2.8    29.1    +      -       -      +
    180E  TYR*     4.4    26.0    -      -       +      +
    181E  ARG      4.6     5.2    -      -       -      +
    182E  PRO*     3.7    36.5    -      -       +      +
    184E  ASP      5.4     2.0    -      -       -      +
    189E  ARG*     4.1    27.1    -      -       -      +
    160F  SER      5.6     0.2    -      -       -      +
    164F  ALA*     4.2    15.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 170 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     95E  LEU*     4.5    17.9    -      -       +      +
     96E  LEU*     5.0     5.6    -      -       +      -
     99E  GLY*     3.9    27.1    -      -       -      -
    106E  THR*     3.7    12.6    -      -       +      +
    109E  LEU*     4.7    20.6    -      -       +      -
    110E  THR*     3.1    27.6    -      -       +      +
    129E  PHE*     4.9    17.0    -      -       +      -
    166E  CYS*     2.9    28.8    +      -       +      +
    167E  GLU*     4.4     7.9    -      -       -      +
    169E  MET*     1.3    78.0    -      -       +      +
    171E  SER*     1.3    59.1    +      -       -      +
    173E  PHE*     3.6     7.0    -      -       +      +
    174E  VAL*     3.4    15.2    +      -       -      +
    182E  PRO*     4.8    11.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 171 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    110E  THR*     4.3     9.2    -      -       -      -
    112E  HIS*     4.7     8.7    -      -       -      -
    167E  GLU      3.3    18.8    +      -       -      -
    168E  GLY*     3.3     7.6    +      -       -      -
    169E  MET      3.1     0.4    -      -       -      -
    170E  LEU*     1.3    78.5    -      -       -      +
    172E  ARG*     1.3    60.6    +      -       -      +
    173E  PHE      3.2     0.2    -      -       -      -
    174E  VAL*     3.2     3.4    +      -       -      +
    175E  ARG*     2.9    36.4    +      -       -      +
    110F  THR*     4.4    13.2    +      -       -      -
    167F  GLU*     3.2    21.2    +      -       -      +
    171F  SER*     4.7     6.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 172 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    168E  GLY      3.2     8.8    +      -       -      +
    169E  MET*     3.1    12.4    +      -       -      +
    171E  SER*     1.3    73.0    -      -       -      +
    173E  PHE*     1.3    57.1    +      -       -      +
    174E  VAL      3.1     1.0    +      -       -      -
    175E  ARG*     3.5    26.4    -      -       -      +
    176E  SER*     2.3    38.0    +      -       -      -
    180E  TYR*     3.2    50.2    -      -       +      +
    129F  PHE*     6.2     0.2    -      -       -      -
    130F  GLU*     3.8    21.2    +      -       -      -
    133F  GLU*     2.8    33.7    +      -       -      -
    160F  SER*     4.2     9.6    +      -       -      +
    163F  LEU*     4.2    11.8    -      -       -      +
    164F  ALA*     5.6     6.3    -      -       -      +
    167F  GLU*     3.0    29.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 173 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     99E  GLY*     3.0    27.1    -      -       -      -
    100E  GLU*     3.5    16.6    -      -       -      -
    103E  PRO*     3.7    10.1    -      -       +      -
    106E  THR*     3.7    22.0    -      -       +      -
    169E  MET      2.8    16.0    +      -       -      +
    170E  LEU*     3.6     9.9    -      -       +      +
    172E  ARG*     1.3    78.9    -      -       -      +
    174E  VAL*     1.3    55.4    +      -       -      +
    176E  SER*     4.2     0.7    -      -       -      -
    178E  PHE*     3.0    68.7    +      +       +      -
    180E  TYR      3.5    15.8    +      -       -      +
    181E  ARG*     3.4    40.2    -      -       -      -
    182E  PRO*     3.5    20.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 174 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    106E  THR*     3.7    14.1    -      -       +      -
    107E  ARG*     3.9    39.1    +      -       +      +
    110E  THR*     3.6    22.0    -      -       +      +
    112E  HIS*     4.6    19.5    -      -       +      +
    170E  LEU      3.4    15.7    +      -       -      +
    171E  SER*     3.2     7.4    +      -       -      +
    172E  ARG      3.1     0.2    -      -       -      -
    173E  PHE*     1.3    74.9    -      -       -      +
    175E  ARG*     1.3    56.8    +      -       -      +
    176E  SER      2.6    17.7    +      -       -      -
    177E  GLU*     2.6    24.5    +      -       -      +
    178E  PHE*     4.3     8.7    -      -       +      -
    115F  MET*     6.5     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 175 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    112E  HIS*     6.0     4.0    -      -       +      +
    171E  SER*     2.9    27.0    +      -       -      +
    172E  ARG*     3.5    32.4    -      -       -      +
    174E  VAL*     1.3    75.7    -      -       +      +
    176E  SER*     1.3    56.1    +      -       -      +
    177E  GLU*     3.5     8.3    -      -       -      +
    109F  LEU      5.7     1.3    -      -       -      -
    110F  THR      5.6     6.1    -      -       -      +
    122F  GLN*     3.5    29.8    +      -       -      +
    125F  ILE*     5.5     0.2    -      -       -      -
    126F  ASN*     2.7    69.6    +      -       -      +
    129F  PHE*     3.5    38.4    -      -       -      +
    130F  GLU*     4.7     5.3    +      -       -      -
    163F  LEU*     4.7     1.2    -      -       -      +
    167F  GLU*     3.1    36.0    +      -       -      -
----------------------------------------------------------
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A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


   I  Hydrophilic      - N and O that can donate and accept hydrogen bonds
                         (e.g., oxygen of hydroxyl group of Ser. or Thr)
  II  Acceptor         - N or O that can only accept a hydrogen bond
 III  Donor            - N that can only donate a hydrogen bond
  IV  Hydrophobic      - Cl, Br, I and all C atoms that are not in
                         aromatic rings and do not have a covalent bond to
                         a N or O atom
   V  Aromatic         - C in aromatic rings irrespective of any other 
                         bonds formed by the atom
  VI  Neutral          - C atoms that have a covalent bond to at least one
                         atom of class I or two or more atoms from class II
                         or III; atoms; S, F, P, and metal atoms in all cases
 VII  Neutral-donor    - C atoms that have a covalent bond with only one
                         atom of class III
VIII  Neutral-acceptor - C atoms that have a covalent bond with only 
                         one atom of class II
For each pair of contacts the state of legitimacy is shown below:

Legend:
+, legitimate
-, illegitimate
------------------------------------------------------------
  Atomic class           I  II  III   IV   V   VI  VII  VIII
------------------------------------------------------------
   I  (Hydrophilic)      +   +    +    -   +   +    +    +
  II  (Acceptor)         +   -    +    -   +   +    +    -
 III  (Donor)            +   +    -    -   +   +    -    +
  IV  (Hydrophobic)      -   -    -    +   +   +    +    +
   V  (Aromatic)         +   +    +    +   +   +    +    +
  VI  (Neutral)          +   +    +    +   +   +    +    +
 VII  (Neutral-donor)    +   +    -    +   +   +    -    +
VIII  (Neutral-acceptor) +   -    +    +   +   +    +    -
------------------------------------------------------------
Warning!
Atom classes for heterogroups are automatically assigned based on the atomic coordinates. However, in three cases (see below) the automatic assignment is currently ambiguous. In these cases, the user is advised to manually analyse the full list of contacts using LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are 
   considered "aromatic" (Class V) if the ring is approximately
   planar, and "hydrophobic" (Class IV) or "neutral" (Classes
   VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
   "hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
   "carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).

Please E-mail any questions and/or suggestions concerning this page to Vladimir.Sobolev@weizmann.ac.il